画出奥运五环

import turtle #导入turtle库
turtle.width(6) #画笔粗细
turtle.color("blue") #画笔颜色为blue
turtle.circle(50) #半径为50
turtle.penup() #抬笔,不绘制路径
turtle.goto(120,0) #箭头去到坐标为(120,0)位置
turtle.pendown() #落笔，绘制图案
turtle.color('black')
turtle.circle(50)
turtle.penup()
turtle.goto(240,0)
turtle.pendown()
turtle.color('red')
turtle.circle(50)
turtle.penup()
turtle.goto(60,-50)
turtle.pendown()
turtle.color('yellow')
turtle.circle(50)
turtle.penup()
turtle.goto(180,-50)
turtle.pendown()
turtle.color('green')
turtle.circle(50)
turtle.done() #最后让它保持画板显示